The term CONTAMINATE, AS WATER can be defined by two crossword solutions: TAINT (5 letters) and POLLUTE (7 letters). Contamination of water is a serious environmental issue that occurs when pollutants, such as chemicals, sewage, and other hazardous materials, enter bodies of water. This contamination can have a negative impact on the health of humans, animals, and plants, as well as the overall quality of the water. TAINT and POLLUTE are two words that describe the process of contaminating water.